calculate

在某个阶段，我们需要计算项目何时完成。

At some stage we need to ___calculate when the project will be finished.

我用计算器算出了这道数学题的答案。

I used a calculator to ___calculate the answer to this math problem.

科学家计算出这个实验大约需要三个月完成。

Scientists ___calculate that this experiment will take about three months to complete.